Primary carcinoid tumours of the ileum: the radiological appearances.

Primary carcinoid tumours are rarely detected in the small intestine by conventional radiological methods. The radiological features are presented of 11 patients with primary small-intestinal carcinoids, in whom the tumour was demonstrated by the barium infusion technique. In four of these patients the site of the primary tumour was also demonstrated angiographically. We have found these methods valuable in identifying primary carcinoid tumours and consider them to be the investigations of choice in evaluating patients with suspected or established carcinoid syndrome.